What is the relationship between Bundle Branch Block (BBB) and nonobstructive hypertrophic cardiomyopathy (nHCM)?
In nHCM, the heart muscle thickens and becomes stiff, particularly in the wall between the left and right ventricles (the septum). This structural change can disrupt the heart's electrical system, which is how Show Full Answer
What is the relationship between Bundle Branch Block (BBB) and nonobstructive hypertrophic cardiomyopathy (nHCM)?
In nHCM, the heart muscle thickens and becomes stiff, particularly in the wall between the left and right ventricles (the septum). This structural change can disrupt the heart's electrical system, which is how Bundle Branch Block can come into play.
A Bundle Branch Block occurs when the electrical signals that tell your heart to beat are delayed or blocked along one of the pathways (branches) leading to the ventricles. When the septum thickens due to nHCM, it can interfere with these electrical pathways. The connection between nHCM and BBB is closely tied to how the thickened heart muscle affects electrical conduction. Here's what's important to know:
- The thickened septal wall in nHCM can compress or damage the electrical pathways running through it
- This can lead to arrhythmias (irregular heartbeats), including Bundle Branch Block
- A left bundle branch block (LBBB) is more commonly associated with HCM due to the left ventricle being most affected
- BBB in nHCM can worsen symptoms like shortness of breath, dizziness, and fainting
It's really important to discuss any changes in your heart rhythm with your cardiologist, as BBB alongside nHCM may influence your treatment plan, including whether devices like a pacemaker or defibrillator might be recommended.
June 18
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